*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.container{
    text-align: center;
    width:1200px;
    height: 500px;
    margin:0 auto;
}
.top{
    background:#E9ECEF;
    padding-top: 70px;
    padding-bottom: 70px;
}
.top p:first-child{
    font-size:48px;
}
.bu_top::after{
    display: table;
    content: "";
    clear: both;
}
.bu_top p{
    float: left;

}
.bu_top{
    margin-top: 20px;
}
.bu_top #p1{
    height: 30px;
    background:#5AAAFF;
    border-radius:3px;
    color:#fff;
    line-height:30px;
    width: 120px;
}
.bu_top #p2{
    height: 30px;
    border-radius:3px;
    line-height:30px;
    width: 120px;
}
.bu_top #but1{
    height: 30px;
    width: 250px;
    border-radius:3px;
    border: 0;
    background:#6C757D;
    margin-right:150px;
    margin-left:150px;
}
.bu_top button img{
    width: 8%;
}
.bu_top button{
    width: 100px;
    height: 30px;
    border: 0;
    border-radius:5px;
    float: left;
    color:#fff;
}
.bu_top .active{
    background-color:#5AAAFF;
}
.bottom{
    padding:20px 76px 76px 76px;
}
.bu_bottom textarea{
    width:511px;
    height: 150px;
    border-radius:3px;
    margin-right: 10px;
    float: left;
    margin-top: 20px;
    padding:10px 10px ;
}
.bu_bottom #tex2{
    background-color:#E9ECEF;
}
.bu_bottom #but2{
    width: 250px;
    height: 40px;
    background:#007BFF;
    color:#fff;
    border-radius:5px;
    border: 0;
    font-size:17px;
    float: left;
    margin-top:20px;
}